Manifesto: Less than 100 years ago, our auditory sense was considerably more dominant than our visual faculty in delivering information about our world. Back then, we were well aware of the impact of positive and negative sounds and we naturally adapted our living and working environment for a better quality of life. Today, blinded by the dominance of our visual sense, we have forgotten – but not escaped from – the effects of negative soundscapes on our mood, productivity and behaviour. 21dB was established to offer solutions to bad acoustics through a dynamic team of sound specialists, musicians, designers, architects, engineers and thinkers.